Gjuarez is right. I did some research on this and found that the carribean turbos are also know as chestnut turbos. I bought three about a month ago, and they started eating my hair algae, but slowly. They all died though.....I think my wife may not have acclimated them properly. Bluezooaquatics sells them. Not sure who else. I have a large mexican turbo that won't touch the hair algae. Neither will margarita's, or the turbos with the red swirl pattern on the shell.